Used as a building block in organic semiconductors, particularly in the development of host materials for blue phosphorescent OLEDs due to its high triplet energy and good thermal stability. Its rigid, planar structure supports efficient charge transport, making it valuable in emissive layers of organic light-emitting diodes. Also employed in the synthesis of advanced polymers and as a precursor for carbazole-based dendrimers and hole-transport materials in photovoltaic devices.